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webwheeler
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467 Posts
Discussion Starter · #3 · (Edited)
thats a pretty broad question....

what is it for?
what will you be running off it?
sorry, I am not getting 12v to the 7-way trailer plug at the rear of the truck.
My dad is pulling a fifth wheel camper and would like to the ability to re-charge the trailer batterys when hooked to the tow rig. The manual states that the wire harness for the electric brake controler is supposed to have a "mega-fuse" along with it for this purpose. His didn't have the Mega-fuse and we need to know what size to go buy.
 

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1,539 Posts
I beleive it is 15 amp.
 

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I'm not old, honest...
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30,454 Posts
It's either 30 or 40. Look in your owners manual, it tells you. The fuses are in the box over the driver's wheel well.
 
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